What happened
Paid solvers/impersonators sat the exam in place of registered candidates using forged photo IDs; a state committee's Nov-2011 report found 114 candidates had qualified through impersonation and CBI courts later convicted multiple accused.
What was done
Arrests / FIR
Official probe — CBI/SIT
Source
Primary reference The Free Press Journal ↗ https://www.freepressjournal.in/education/indore-5-years-imprisonment-to-candidate-and-impersonator-in-2009-pmt-exam-caseThis entry summarises the linked report. Where the summary and the source disagree, the source wins — and please tell us.